Pressure cooker



FIG. 1 is a perspective view of a pressure cooker embodying our new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a side view thereof.

FIG. 4 is an end view looking from the right in FIG. 3.

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a pressure cooker, as shown. 